Mixer for gaseous fuel.



G. T. HANCHETT.

MIXER FOR GASEOUS FUEL.

APPLIQATIUN FILED JULY 16, 190s.

Patented Feb. 20, 1912 GEORGE'T. HANCHETT, OF HACKENSACK, NEW JERSEY.

MIXER FOR GASEOUS FUEL.

Specification of Letters Patent. 4 Patented Fel). 20, 1912.

application filed July 1s, 190s. serial No. 443,748.

To all whom 'it may concern:

Be it known that I, Gaonon T. HaNorlETT,

a citizen of the United States, residing at' improved. carbureter whichmore thoroughly carburets, acts so that the liquid fuel will be a moreperfect gas, be more prfectly mingled; with air, permits the running ofthe engine cylinder at a lower telnperature, permits the use of greater'compression in the engine cylinder', and 1s more perfect mechanically.

The following is a description of my. lnvention, reference being had'tothe accompanying drawings, in which- Figure 'l represents a verticalsection of the carbureter.l Fig. 2 is a horizontal sect-ion of the same,with the coil removed, on the line -m Fig. 1.

vReferring more particularly to the drawings, A. is the inlet pipe forthe liquid fuel, such, for instance, as gasolene.

B is a. chamber for collecting any water that may pass in with the fuel.

C is a pet cock to draw olf the water when necessary.

D is an annular chamber-surrounding the chamber E. ThechamberE isconnected to a heat-ing chamber E. In the chamber D is an annular floatvF also surrounding the chamber E. This float is pivoted at Gr andconnected to an arm' H, which actuates a valve I controlling the flow ofliquid fuel through the orifice z', so as to maintain it at a constantlevel. The annular 'float forms a rigid construction with a long leverarm insuring a powerful action on'the valve I. From the chamber D thefuel ilowsthrough a passage J to a needle valve Kpa'st whose point it-flows to the chamber L. Across this chamber L, passing-through bothwallsl vthereof and into the chamber E, is an air passage M, At thebottom ofthe chamber E is -an inlet N controlled by the adjustablespring seated valve O. Incthe chamber E is a heating coil P connected atone end to the inlet pipe P, and at-the other end to the discharge pipeP2. Hot water from the water jacket is passed through this coil andthence, if in a motor boat, discharged at any convenientpoint, or if inan automobile, to a radiator. The upper chamber l is provided with anoutlet Q in which is a throttle R actuated by an arm S, and locked, ifdesired, by a set screw T.

The heating coil P in the chamber E', as shown in Fig. 1, is a pluralityof parallel coils each lhaving a plurality of turns so that the coil asa Whole has a plurality of turns in each of several substantiallyparallel planes and surrounding a common axis interspersed with wirenetting P3 P3 P3, secured directly thereto so as to conduct heattherefrom. The vwire -nettings constitute screens which provide enlargedlfeated surfaces for the mixed fuel and air to impinge against and alsoret-ard the passage of the air and fuel through the chamber, causing thecurrents to diverge so that contact is made with all the heated portionsof both the coil and the screens. The coil is preferably of copper andthe netting of brass, on account of their durability and heatconductivity. l

In the. operation of the apparatus, as the engine starts, air is drawnin through' the opening M-over the fuel -in the ordinary manner, thefuel being atomized at the needle valve orifice. As the engine speedsup, the water becomes heatedl and the coil P and netting P3 forms aheated surface upon which the fuel .impinges The/'tortuous passageswhich the air and gas must follow mixes them thoroughly. The impingingof the fuel 'upon the heated surfaces of the coil and netting vaporizesthe fuel but does not greatly raise the temperature of the mix' ture.The air and gas in the chamber E are thoroughly mixed and the fuel isthoroughly vaporized so that it passes into the combustion cylinder inproper condition for immediate use. A.For this reason the heat of thecombustion chamber is not` necessary for completing the vaporizin andthe combustion chamber can there ore be run' much cooler. The walls ofthe combustion cha-m ber have heretofore been relied upon to vaporizethe fuel, but have done it unsatisfactorilybecause so small a part isbrought into direct contact therewith. Since my fuel is not heated untilafter it is mixed with air, there is no danger of vaporizing before itpasses the needle valve. Since the air is not heated except as it passesthrough the cllamber E, it does not become hot, the fuel being a betterconductor of heat and the heat units given oil' b v the coil andnetting. being almost entirely taken up in' vaporizing the fuel. Theair, therefore, does not expand as it would if heated before being mixedwith the fuel, and consequently does, not re duce the ellicienc the caseif heated air were used. As. the engine speeds up, air is also drawn inthrough the inlets N.' This air meets the air 4coming in through theport N, to ether with the fuel, at an angle, so that t e tvvo currentsbecome thoroughly combined and mixed. As soon as the coil Pbecomesheated, the eiliciency of the engine rises very much, and sincethat is the normal condition, thev elfi ciency in normal running is veryhigh. This is brolght about by two factors viz: the comple e mixing ofthe two, and the vaporization of the fuel. The perfect control ed? theliquid fuel suppl contributes incidentally tothe improve action of thecarbureter as a whole.

My invention permits of various modifications of the apparatus shown anddescribed, and has various advantages such as will be evident to thoseskilled in the art.

'What I claim is:

A1; In a device of the character described,

of the engine, as would be' thecombinatin of a carbureter casing havinga chamber therein', a heating 1coil within sald chamber against whichmixed air and fuel may impinge, said coil having a plurality of turns ineach of several substantially parallel planes and surrounding a commonaxis, and entrance and exit ports,

Vsaid coil lying in the path between said envtrance and exit ports.

v.water from. a' Water jacket and against which the air and fuelimpinge, and means interspersed' between turns in the coil With in thechamber for retarding the passage of the fuel and air therethrough.

GEORGE T. HANCHETT.

Witnesses:

' EDGAR A.v TREDwnLL,

R. W. PAnvREL.

Copies 0f nthis patent may he obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

